Jack Teixeira, a 21-year-old Massachusetts Air National Guardsman, was arrested Thursday on federal charges of unauthorized removal, retention and transmission of classified national defense information. Authorities say he’s responsible for releasing potentially hundreds of highly classified documents, first within a small online video gaming group on the Discord platform, then more broadly across social media. He was not required to enter a plea when he appeared in court Friday.

The allegations against the suspect highlight a dangerous and embarrassing disparity: Corporate America has better insider threat programs than the Defense Department does. Our vulnerability to such threats is a problem that the Pentagon and Congress must address now.